Within Jira settings I created the possible priorities of an issue.

I'd like to be able to see the color code and description of the priority when I'm in the backlog.
I couldn't find anywhere where those are displayed and I'm thinking they may be useless right now.
The name and icon are displayed properly, but when we create issues we don't see the color code and description.

Do I have to change a setting to see the description ?
If it's not visible in the backlog, where is it visible ?